TRANSFORMATION OF WATER CHEMICAL COMPOSITION IN ARCTIC TUNDRA CREEKS UNDER WATER-ROCK INTERACTION
Authors
- Ludmila S. Lebedeva Melnikov Permafrost Institute of Siberian Branch of the Russian Academy of Science, Yakutsk, Russia , Институт мерзлотоведения им. П.И. Мельникова СО РАН, г. Якутск, Россия
- Vladimir V. Shamov Melnikov Permafrost Institute, Siberian branch, Russian Academy of Sciences, Yakutsk, Russia , Институт мерзлотоведения им. П.И. Мельникова СО РАН, г. Якутск, Россия https://orcid.org/0000-0001-9310-1836
- Anna M. Tarbeeva Lomonosov Moscow State University, Moscow, Russia , Московский государственный университет им. М.В. Ломоносова, г. Москва, Россия https://orcid.org/0000-0003-2001-8147
- Nadezhda A. Pavlova Melnikov Permafrost Institute, Siberian branch, Russian Academy of Sciences, Yakutsk, Russia , Институт мерзлотоведения им. П.И. Мельникова СО РАН, г. Якутск, Россия https://orcid.org/0000-0001-5473-7778
DOI:
https://doi.org/10.34753/HS.2021.3.4.333+ Keywords
+ Abstract
The degree of knowledge about migration of water and dissolved substances in arctic and subarctic permafrost landscapes is extremely low. In our study the water sources and the mechanisms of streamflow formation of the small Arctic tundra rivers in the lower Lena River are described on the basis of hydrochemical data. Studied natural waters are contrasting in chemical composition. The maximum concentrations of chemicals, up to the brackish type of water, are characteristic of groundwater seeps, the composition of which is formed during long-term interaction with parent rocks. The freshest waters are confined to the organic layers of the soil profile. The sources of streams are ultra-fresh, cold and sometimes show a slightly acidic reaction, which indicates their formation in the organic part of the active layer at the contact with the permafrost top. Downstream where the channel is actively cut into the bedrock, the streams' waters are enriched with mineral compounds. Downstream, water warms up in the channel and ultra-fresh water flows from the slopes and dilute the stream water. The sources and low-mineralized tributaries of the small streams are formed due to the thawing of the ground ice in the active layer. The interaction of water and rocks determines the chemical composition of the water of the studied streams. Information about the chemical composition of natural waters allows drawing conclusions about the sources and water pathways in the watersheds, which is necessary for developing models and predicting natural processes.
+ Author Biographies
eLibrary (РИНЦ) ORCID ID Scopus ID Прочие 6441-4823 0000-0002-7498-9902 56435708400 J-6959-2016 eLibrary (РИНЦ) ORCID ID Scopus ID Прочие 4913-0239 0000-0001-9310-1836 6701600698 A--5507-2011 eLibrary (РИНЦ) ORCID ID Scopus ID Прочие 2713-1484 0000-0003-2001-8147 16417752900 A-8605-2015 eLibrary (РИНЦ) ORCID ID Scopus ID Прочие 8046-4220 0000-0001-5473-7778 57188696296 W-2163-2018
Ludmila S. Lebedeva
SPIN-код
Vladimir V. Shamov
SPIN-код
Anna M. Tarbeeva
SPIN-код
Nadezhda A. Pavlova
SPIN-код
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